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Finding the Fourth Proportional to 220,803.12, 304,748.19 and 130,153.86

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Solution

The fourth proportional to 220,803.12, 304,748.19 and 130,153.86 is: 179,635.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,803.12 : 304,748.19 = 130,153.86 : x
  2. Step 2: Convert to fraction form
    220,803.12/304,748.19 = 130,153.86/x
  3. Step 3: Cross multiply
    220,803.12x = 304,748.19 × 130,153.86
  4. Step 4: Simplify right side
    220,803.12x = 39,664,153,256.51
  5. Step 5: Solve for x
    x = 39,664,153,256.51/220,803.12
  6. Step 6: Final answer
    x = 179,635.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.